Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1987-03-26
1989-01-03
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250239, H01J 314
Patent
active
047958995
ABSTRACT:
A lighting sensor is provided including a sleeve made from a translucent erial having a bottom intended to be exposed to the light whose illumination it is desired to measure, an optoelectronic component positioned inside the sleeve with its sensitive face disposed in line with said bottom and means for securing said component and said sleeve together.
The invention overcomes in a simple way the problems due to the non linearity of the signal delivered by the optoelectronic component to the saturation of this component and to the narrowness of its aperture angle.
REFERENCES:
patent: 3709615 (1973-01-01), Blakeslee et al.
patent: 4178101 (1979-12-01), Booth
patent: 4181398 (1980-01-01), Sick
patent: 4703173 (1987-10-01), Wood et al.
Grasset Marcel
Pilot Alain
Drucker William A.
Nelms David C.
Societe Francaise d'Equipements pour la Navigation Aerienne (S.F
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